i made this model using the knife project tool for the holes. Way too late i notices that the n-gon faces give my shading issues. Would it have been the best solution to make them quads directly after applying the knife project? Now i dont really know where to start to connect all the holes so i have quads. I just added some edges with the knife tool but it doesnt fix all the issues. Smooth shading already fixes some, but also not all.

Whats the best approach to clean this up or how should i have done this after the knife project?

Thanks for your answers! enter image description hereenter image description here enter image description here


1 Answer 1


Here is a proposition that works better:

enter image description here

You can work with quads as much as possible, or make sure that your ngons are not adjacent with faces that are not co-planar so that Blender doesn't try to smooth between this ngon and this other face.

  • $\begingroup$ Thanks for your answer. Unfortunately, everything i tried like this made it even worse. All the other ngons in the mesh aro ok, for example the ones in the middle, just the ones around the screw wont look good. $\endgroup$
    – Hennes
    Nov 17, 2021 at 16:34
  • $\begingroup$ please share your file: pasteall.org/blend $\endgroup$
    – moonboots
    Nov 17, 2021 at 16:35
  • $\begingroup$ pasteall.org/blend/42eddd0a799c4e91ab7fed14fb3e47bc $\endgroup$
    – Hennes
    Nov 17, 2021 at 17:02
  • $\begingroup$ yes what I show is not enough in your case because actually even though the ngons are flat surfaces it tries to smooth between the flat surface and the bevel, which gives these artefacts, I guess you can't avoid a good topology, like less edges for your round hole, quads, etc, also do you plan to use a Subdivision Surface modifier? $\endgroup$
    – moonboots
    Nov 17, 2021 at 17:11
  • 1
    $\begingroup$ @Hennes I'd not say ngons there are flat (planar) since making them flat (scaling to 0 by z) kinda makes it better. In this case proper topology is not even needed i.stack.imgur.com/mOmTC.jpg since one can workaround that. So make flat whatever needs to be flat there and it can be called a day. Dirty, not "nice", but working solution. Using Weighted Normal modifier can be next step in managing that, albeit not necessary here $\endgroup$
    – Mr Zak
    Nov 17, 2021 at 20:01

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .